The 2016 poll results show that almost two-thirds (64 percent) of American adults age 18+ who own outdoor power equipment say they either are not sure (42 percent) or do not pay any attention (22 percent) to what type of fuel they are using. In 2015, almost half (45%) were not sure what type of fuel they used and one in five (20%) did not pay any attention to the type of fuel used.